Increase in nitrogen oxides due to exhaust gas recirculation valve manipulation

Rešetar, Marko; Pejić, Goran; Ilinčić, Petar; Kozarac, Darko; Lulić, Zoran

doi:10.1016/j.trd.2022.103391

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…[28,29]. Previous studies have shown that tampering with ECSs significantly increases pollutant emissions, especially for NO X and PN [30][31][32]. It is well known that the emissions mentioned above are very harmful to human health and the environment [33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

An Estimate of the NOX Emissions of Euro 6 Diesel Passenger Cars with Manipulated Emission Control Systems

Rešetar,

Pejić,

Ilinčić

et al. 2024

Sustainability

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The motivation for conducting this research stems from the increasingly applied manipulations of emission control systems (ECSs), especially those in diesel passenger cars (PCs). The study aimed to investigate the influence of manipulations of exhaust gas recirculation (EGR) valves and a diesel exhaust fluid (DEF)-dosing system on the nitrogen oxide (NOX) emissions of a Euro 6 diesel vehicle and, through the quantification of vehicles with manipulated ECSs, estimate the emissions of Euro 6 diesel PCs. Portable emissions measurement system (PEMS) measurements were performed on a Euro 6 diesel vehicle at a constant speed and on real driving emission (RDE) routes. The speed-dependent functions of the NOX hot emission factor (EF) were calculated for seven different scenarios. The results showed that the NOX EFs for the worst-case scenarios were more than two orders of magnitude higher than those where all ECSs were active. Applying the calculated EFs and the survey answers on the percentage of manipulated PCs to the Croatian Euro 6 diesel PC fleet, the results showed that the emission levels were up to 46.3% higher than the emissions calculated by the official computer program COPERT v5.6.5, with a tendency towards significantly higher values. The main conclusion is that vehicle manufacturers, policymakers, and the general public need to be informed about the enormous damage that in-use vehicles with manipulated ECSs cause to the environment and human health, in order to prevent such actions.

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Section: Introductionmentioning

confidence: 99%

An Estimate of the NOX Emissions of Euro 6 Diesel Passenger Cars with Manipulated Emission Control Systems

Rešetar,

Pejić,

Ilinčić

et al. 2024

Sustainability

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“…Over the years, the limit values for emissions of harmful substances have decreased significantly [5,6]. Since the introduction of the first limit value, the so-called Euro 1 to the currently valid Euro 6d-Temp limit value of certain emissions of harmful substances has been reduced by more than 95% [7].…”

Section: Introductionmentioning

confidence: 99%

Real Driving Emission from Vehicle Fuelled by Petrol and Liquefied Petroleum Gas (LPG)

Vučetić¹,

Sraga²,

Bućan³

et al. 2022

CogSust

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In recent years, in addition to laboratory tests to determine emissions from road motor vehicles, tests in real driving conditions RDE (Real Driving Emissions) with the use of portable measuring equipment PEMS (Portable Emissions Measurement System) have been conducted. The paper presents the results of the emission research conducted on a vehicle Dacia Duster 1.0 TCe 100 ECO-G fuelled by petrol Eurosuper 95 and liquefied petroleum gas (LPG). The aim of the research was to determine the emissions of harmful substances and carbon dioxide, i.e. fuel consumption, in accordance with the prescribed RDE procedure and their comparison for the two types of motor vehicle fuel. Results clearly showed that the method used can differentiate between fuel types. The results correspond to the RDE emissions public data, which secures that the methodology used is in accordance with the procedure for measuring emissions in real driving conditions.

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Characterizing NOx emissions from diesel trucks with tampered aftertreatment systems and its implications for identifying high emitters

Tian,

He,

Peng

et al. 2024

Science of The Total Environment

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Increase in nitrogen oxides due to exhaust gas recirculation valve manipulation

Cited by 3 publications

References 26 publications

An Estimate of the NOX Emissions of Euro 6 Diesel Passenger Cars with Manipulated Emission Control Systems

An Estimate of the NOX Emissions of Euro 6 Diesel Passenger Cars with Manipulated Emission Control Systems

Real Driving Emission from Vehicle Fuelled by Petrol and Liquefied Petroleum Gas (LPG)

Characterizing NOx emissions from diesel trucks with tampered aftertreatment systems and its implications for identifying high emitters

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